/Engine/Source/Developer/AnimationDataController/Public/AnimDataController.h
virtual void ResizeNumberOfFrames ( [FFrameNumber](API\Runtime\Core\Misc\FFrameNumber) NewLength, [FFrameNumber](API\Runtime\Core\Misc\FFrameNumber) T0, [FFrameNumber](API\Runtime\Core\Misc\FFrameNumber) T1, bool bShouldTransact )